80928991 ÷ 100 
We're looking to find how many times 100 goes into 80928991.

Advancing to step 1:
When dividing 8 by 100, we get 0 with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Bring next digit (0) of the dividend behind the 8 and repeat the process: 80 / 100

Step 2:
100 can be fit into 80 0 times, resulting in a remainder of 80.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 80 leaves us with 80.
Include the next digit (9) from the dividend after 80, then repeat: 809 / 100

On to step 3:
809 divided by 100 is 8 with a remainder of 9.
Put 8 as the next digit of the answer. 
Result so far: 8.0
Subtracting 800 from 809 leaves us with 9.
Bring next digit (2) of the dividend behind the 9 and repeat the process: 92 / 100

Let's proceed to step 4:
The number 100 fits into 92 0 times, leaving a remainder of 92.
Record the quotient 0 as the next digit in the result. 
Result so far: 80.0
Deduct 0 from 92 and we're left with 92.
Take the next digit (8) from the dividend and append it to 92, then repeat: 928 / 100

On to step 5:
100 goes into 928 9 times with a remainder of 28.
Write down 9 as next digit of the result. 
Result so far: 809.0
If we take 900 away from 928, we end up with 28.
Bring next digit (9) of the dividend behind the 28 and repeat the process: 289 / 100

On to step 6:
289 divided by 100 is 2 with a remainder of 89.
Put 2 as the next digit of the answer. 
Result so far: 8092.0
Deduct 200 from 289 and we're left with 89.
Fetch the next digit (9) from the dividend, attach it to 89 and continue: 899 / 100

On to step 7:
899 divided by 100 is 8 with a remainder of 99.
Record the quotient 8 as the next digit in the result. 
Result so far: 80928.0
Subtract 800 from 899 to get 99.
Fetch the next digit (1) from the dividend, attach it to 99 and continue: 991 / 100

Moving on to step 8:
If we divide 991 by 100, we get 9 and a remainder of 91.
The number 9 becomes the next digit in our result. 
Result so far: 809289.0
If we subtract 900 from 991, we get 91.
Since there are no more digits in the dividend, we add a zero to the remainder making it 910, and continue the process.

Moving on to step 9:
When dividing 910 by 100, we get 9 with a remainder of 10.
Put 9 as the next digit of the answer. 
Result so far: 809289.9
The remainder is 10 after subtracting 900 from 910.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 10:
100 can be fit into 100 1 times, resulting in a remainder of 0.
Put 1 as the next digit of the answer. 
Result so far: 809289.91
If we take 100 away from 100, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 11:
100 can be fit into 0 0 times, resulting in a remainder of 0.
The next digit of our result is 0. 
Result so far: 809289.91
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 12:
0 divided by 100 is 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 809289.91
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 809289.91, with a leftover of 0.0.